On Some South African Aviculariidae (Arachnida). 101 



In consequence, the length of the carapace equals that of tibia and 

 metatarsus of 1st leg alone. 



The terminal joint of the spinners is almost hemispherical, and 

 shorter than in 8. collinus. Also the posterior median eyes are 

 somewhat smaller and the anterior row is slightly more recurved. 



Dentition and spiuation correspond throughout, though the latter 

 may be somewhat more robust. 



Four ? ? specimens, not fully adult, taken by Dr. W. F. Purcell 

 and E. M. Lightfoot (8/03) at Tulbagh Road Station, agree even 

 more closely with S. collinus, since the front legs are normal in 

 length and the terminal joints of the spinners is longer. As this 

 species predominates on the Peninsula it may well have extended to 

 the Tulbagh Valley and environs. 



SPIROCTENUS BROOMI, n. sp. 



Specimens. Ten ? ? (No. 13843 Types) from Stellenbosch. (Dr. 

 Broom, 9/10/04.) This distinct species was named by Dr. Purcell, 

 but no description of it published. 



Colour. Very dark. Carapace dark infuscated brown; upper 

 abdomen dull purplish black with faint testaceous flecks ; under 

 abdomen slightly lighter ; genital plate and lung operculae pale 

 brown. Sternum and coxae a lighter, redder brown than the carapace ; 

 legs dark, especially the anterior ones, the posterior ones being 

 slightly lighter. Patellae lighter and slightly redder. 



Carapace. Equal in length to the tibia, metatarsus and -, \- tarsus 

 of 1st leg, and exceeding the metatarsus and tarsus of 4th leg. Slightly 

 pilose posteriorly. Fovea as wide as or wider than the ocular tubercle ; 

 deep and slightly procurved: 



Eyes. Posterior medians oval, slightly smaller than anterior 

 medians, equal to posterior laterals, and touching the latter. Posterior 

 laterals smaller than the anterior laterals. 



Spinners stout ; equal in length to about -*- of the sternum ; apical 

 segment subconical and about equal in length to 7} the median 

 segment. 



Sternum. Posterior sternal sigilla oval, opposite anterior side of 

 3rd coxae, and about i their long diameter from the margin. 



Labium. With 4-5 stout teeth ; coxae of pedipalps with about 40 

 denticles. 



Chelicerae. With 9-10 teeth on the inner side, and an irregular 

 row of about 15 denticles towards outer side of the base of the groove. 

 Rastellum composed of long stout spines on the inner edge and long 

 stout bristles on the outer edge. 



